Groton Data Center Zoning Limit
Groton, CT Data Center Zoning Size Cap (Post-Moratorium)
Groton, CT · Groton, Conn., Zoning Regs § 5.1-6.F Data Center (adopted June 27, 2023; eff. July 14, 2023)
- Status
- In effect
- Took effect
- July 14, 2023
- Applies to
- Data center developers in Groton
- Enforced by
- Town of Groton Planning and Zoning Commission
Groton's Planning and Zoning Commission adopted zoning regulations on June 27, 2023 that permanently limit data centers to no more than 12,500 square feet and prohibit water cooling systems — effectively barring hyperscale facilities that typically run 150,000 to 350,000 square feet. The regulations became effective July 14, 2023 (codified at Section 5.1-6.F of the Groton zoning code), making Groton one of the first US municipalities to cap data center size by right.
Who is protected: Groton residents
Legal detail
Groton Planning and Zoning Commission adopted conditional-use data center regulations effective July 14, 2023 (Town of Groton Zoning Regs § 5.1-6.F Data Center), limiting data center buildings to 12,500 sq ft and prohibiting water cooling systems; follows a prior moratorium. A developer appealed the regulations in July 2023 (The Day, July 28, 2023).
Key facts
| Jurisdiction | Groton, CT |
|---|---|
| Level | City / local |
| Strength | Moderate |
| Enacted | June 27, 2023 |
| Citation | Groton, Conn., Zoning Regs § 5.1-6.F Data Center (adopted June 27, 2023; eff. July 14, 2023) |
| Topics | data-center siting and energy |
| Agency page | Groton, Connecticut announces year-long moratorium on large data centers — Data Center Dynamics |
Related data-center siting and energy rules elsewhere
- Superior WI Data Center Moratorium (1-year) · In effect
- Dane County WI Hyperscale Data Center Moratorium · In effect
- Madison WI Data Center Moratorium (1-year) · In effect
- Manitowoc County WI Data Center Moratorium · In effect
- WA SB 5982 (Data Center / Clean Energy) · In effect
- Dayton OH data center moratorium (180-day, Apr 2026) · In effect
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